Help Please Megajolt Global Controller Options

[Iang1234]

Hi All,
I need help please I have a 2.0L ford pinto engine with fast road cam twin weber 40's with a megajolt, I have a misfire at 4000 rpm (almost like a cough and a back fire) then it carries on upto 5500 rpm no issue,
So far I have changed Coil Pack and Plugs, change the setting on the mega jolt, Changed the jetting on webers, cant see any air leaks on the webers but still it keeps doing it.
I did at one point change the setting on the mega jolt took it out for a short drive and I thought I had fixed it but the next time I drove it back to the same issue. The mega jolt is keeping it setting as far as I can see.
I am pulling my hair out

On the megajolt (Using MAP sensing) I have only put the number of cylinders in the Global Controller Option nothing else, should the cranking advance be something other than 0 also the Trigger offset and EDIS PIP filter level??

Any help would be greatly appreciated, Thanks

[brentp]

Hello,

Often, issues where you see misfires at a specific RPM are caused by a harmonic vibration with the sensor, especially if the sensor is not rigid and can oscillate at a specific frequency.

Try this: disconnect the megajolt so the engine is only running on EDIS. Do you still have the misfire? If so, then you have an issue around the EDIS installation. Check to ensure your senor installation is sound, and you have the proper gap between trigger wheel and sensor (1mm).

Thanks, please let us know what you find out.